The most common and most likely answer to this crossword clue is the 4 letter word PEAN
P
E
A
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More clues leading to the result PEAN
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The straight part
We know that "Part of hammer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of hammer = pean.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PEAN mean?
PEAN noun- A heraldic fur of gold spots on a black field.
- : In blazon, a heraldic fur of a black field. with gold spots
- A chant or song, especially a hymn of thanksgiving for deliverance or victory, to Apollo or sometimes another god or goddess; hence any song sung to solicit victory in battle.
- (by extension) Any loud and joyous song; a song of triumph.
- (by extension) An enthusiastic expression of praise.
- To sing a paean; to praise.
- The (often spherical) end of the head of a hammer opposite the main hammering end.
- To shape metal by striking it, especially with a peen.